Surf pattern. How was it done?

[SUP]

This is the cover of an old military album I saw in a store. That sea looks so realistic. Those waves, that foamy look. How was that tooled? It felt 3-D.

 

 

[SUP]

This is on an old album from WWII.

[BlackDragon]

Not sure if it's tooled. It looks more like a stamp because the lines are to straight. Maybe an engraved plate used to stamp onto leather.

[SUP]

Thank you for your reply.

From close, it did not appear stamped. At least the sea did not. The ship, I wondered about that. But the sea is more interesting to me.  How is surf like that  tooled? I wonder whether one of those classes that Elk Track studios provides teaches something like that. I must check.

Edited May 9, 2025 by SUP